---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
File /opt/hostedtoolcache/Python/3.10.15/x64/lib/python3.10/site-packages/IPython/core/formatters.py:977, in MimeBundleFormatter.__call__(self, obj, include, exclude)
    974     method = get_real_method(obj, self.print_method)
    976     if method is not None:
--> 977         return method(include=include, exclude=exclude)
    978     return None
    979 else:

File /opt/hostedtoolcache/Python/3.10.15/x64/lib/python3.10/site-packages/altair/vegalite/v5/api.py:2161, in TopLevelMixin._repr_mimebundle_(self, include, exclude)
   2159     return {}
   2160 else:
-> 2161     return renderers.get()(dct)

File /opt/hostedtoolcache/Python/3.10.15/x64/lib/python3.10/site-packages/altair/vegalite/v5/display.py:65, in svg_renderer(spec, **metadata)
     64 def svg_renderer(spec, **metadata):
---> 65     return spec_to_mimebundle(
     66         spec,
     67         format="svg",
     68         mode="vega-lite",
     69         vega_version=VEGA_VERSION,
     70         vegaembed_version=VEGAEMBED_VERSION,
     71         vegalite_version=VEGALITE_VERSION,
     72         **metadata,
     73     )

File /opt/hostedtoolcache/Python/3.10.15/x64/lib/python3.10/site-packages/altair/utils/mimebundle.py:51, in spec_to_mimebundle(spec, format, mode, vega_version, vegaembed_version, vegalite_version, engine, **kwargs)
     48     raise ValueError("mode must be 'vega-lite'")
     50 if format in ["png", "svg", "pdf", "vega"]:
---> 51     return _spec_to_mimebundle_with_engine(
     52         spec, format, mode, engine=engine, **kwargs
     53     )
     54 if format == "html":
     55     html = spec_to_html(
     56         spec,
     57         mode=mode,
   (...)
     61         **kwargs,
     62     )

File /opt/hostedtoolcache/Python/3.10.15/x64/lib/python3.10/site-packages/altair/utils/mimebundle.py:95, in _spec_to_mimebundle_with_engine(spec, format, mode, **kwargs)
     92 # Normalize the engine string (if any) by lower casing
     93 # and removing underscores and hyphens
     94 engine = kwargs.pop("engine", None)
---> 95 normalized_engine = _validate_normalize_engine(engine, format)
     97 if normalized_engine == "vlconvert":
     98     import vl_convert as vlc

File /opt/hostedtoolcache/Python/3.10.15/x64/lib/python3.10/site-packages/altair/utils/mimebundle.py:186, in _validate_normalize_engine(engine, format)
    181             raise ValueError(
    182                 "Saving charts in {fmt!r} format requires the altair_saver package: "
    183                 "see http://github.com/altair-viz/altair_saver/".format(fmt=format)
    184             )
    185         else:
--> 186             raise ValueError(
    187                 "Saving charts in {fmt!r} format requires the vl-convert-python or altair_saver package: "
    188                 "see http://github.com/altair-viz/altair_saver/".format(fmt=format)
    189             )
    190 else:
    191     raise ValueError(
    192         "Invalid conversion engine {engine!r}. Expected one of {valid!r}".format(
    193             engine=engine, valid=("vl-convert", "altair_saver")
    194         )
    195     )

ValueError: Saving charts in 'svg' format requires the vl-convert-python or altair_saver package: see http://github.com/altair-viz/altair_saver/